<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品添加</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <el-steps
        :active="Number(activeIndex)"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step> </el-steps
      ><el-form
        label-width="100px"
        :model="addForm"
        :rules="addrules"
        ref="addRuleFormRef"
        label-position="top"
      >
        <el-tabs
          tab-position="left"
          v-model="activeIndex"
          :before-leave="beforeTabLeave"
          @tab-click="tabClickIndex"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name">
                <!-- v-model="ruleForm.name" -->
              </el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input type="number" v-model="addForm.goods_price">
                <!-- v-model="ruleForm.name" -->
              </el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input type="number" v-model="addForm.goods_weight">
                <!-- v-model="ruleForm.name" -->
              </el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input type="number" v-model="addForm.goods_number">
                <!-- v-model="ruleForm.name" -->
              </el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="this.cateList"
                :props="props"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="(item, index) in attrList"
              :key="index"
              :label="item.attr_name"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="item1"
                  v-for="(item1, index1) in double[index].attr_vals"
                  :key="index1"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="(item, index) in onlyAttrList"
              :key="index"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals">
                <!-- v-model="ruleForm.name" -->
              </el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3"
            ><el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerobj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload></el-tab-pane
          >
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="addCate"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <el-dialog :visible.sync="picDialogVisible" width="50%">
      <img :src="previewPath" />
    </el-dialog>
  </div>
</template>
<script>
import _ from 'lodash'
export default {
  data() {
    return {
      headerobj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      attrList: [],
      onlyAttrList: [],
      props: {
        value: 'cat_id',
        expandTrigger: 'hover',
        label: 'cat_name',
        children: 'children'
      },
      cateList: [],
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: '',
        goods_weight: '',
        goods_number: '',
        goods_cat: '',
        attrs: [],
        pics: [],
        goods_introduce: ''
      },
      addrules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          {
            required: true,
            message: '请输入商品价格',
            trigger: 'blur'
          }
        ],
        goods_weight: [
          {
            required: true,
            message: '请输入商品重量',
            trigger: 'blur'
          }
        ],
        goods_number: [
          {
            required: true,
            message: '请输入商品数量',
            trigger: 'blur'
          }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      previewPath: '',
      picDialogVisible: false,
      double: []
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    handlePreview(fil) {
      this.previewPath = fil.response.data.url
      this.picDialogVisible = true
    },
    handleRemove(fil) {
      const index = this.addForm.pics.findIndex(item => {
        return item.pic === fil.response.data.tmp_path
      })
      this.addForm.pic.splice(index, 1)
    },
    async tabClickIndex() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(
          `categories/${this.addForm.goods_cat[2]}/attributes`,
          {
            params: { sel: 'many' }
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('获取分类参数失败！')
        }
        res.data.forEach(e => {
          e.attr_vals = e.attr_vals.length === 0 ? [] : e.attr_vals.split(' ')
        })
        this.attrList = res.data
        this.double = _.cloneDeep(this.attrList)
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.addForm.goods_cat[2]}/attributes`,
          {
            params: { sel: 'only' }
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('获取分类属性失败！')
        }
        this.onlyAttrList = res.data
      }
    },
    handleSuccess(rp) {
      this.addForm.pics.push({ pic: rp.data.tmp_path })
    },
    beforeTabLeave(activename, oldactivename) {
      if (oldactivename === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败！')
      }
      this.cateList = res.data
    },
    addCate() {
      this.$refs.addRuleFormRef.validate(async val => {
        if (!val) return this.$message.error('请填写必要的表单项')
        const from = _.cloneDeep(this.addForm)
        from.goods_cat = from.goods_cat.join(',')
        this.attrList.forEach(item => {
          from.attrs.push({
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(',')
          })
        })
        this.onlyAttrList.forEach(item => {
          from.attrs.push({ attr_id: item.attr_id, attr_value: item.attr_vals })
        })
        const { data: res } = await this.$http.post('goods', from)
        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败！')
        }
        this.$message.success('添加商品成功！')
        this.$refs.addRuleFormRef.resetFields()
        this.$router.push('/goods')
      })
    }
  }
}
</script>
<style lang="less" scoped>
.el-steps {
  margin: 15px 0;
}
img {
  width: 100%;
}
.btnAdd {
  margin-top: 15px;
}
</style>
